Latest results of the direct dark matter search with the EDELWEISS-2 experiment

Abstract

EDELWEISS-2 is a Ge-bolometer experiment located in the underground laboratory Laboratoire Souterrain de Modane (LSM, France). For the second phase of the experiment, the collaboration has developed new cryogenic detectors with an improved background rejection (interleaved electrodes design, Phys. Lett. B681 (2009) 305). A continuous operation of ten of these bolometers at LSM together with an active muon veto shielding has been achieved. First results based on an effective exposure of 144 kg \dot d taken in 2009 have been published recently (Phys. Lett. B687 (2010) 29), the acquired data set has since then been doubled. The already published data correspond to an improvement in sensitivity of about 15 compared to EDELWEISS-1. We present and discuss the latest bolometer data including the identification of muon-induced background events and special measurements of muon-induced neutrons in LSM.

To appear in the proceedings of PASCOS 2010, the 16th International Symposium on Particles, Strings and Cosmology, Valencia (Spain), 19-23 July 2010

References in corpus (4)

• First results of the EDELWEISS-II WIMP search using Ge cryogenic detectors with interleaved electrodes
• Monitoring of the thermal neutron flux in the LSM underground laboratory
• A detection system to measure muon-induced neutrons for direct Dark Matter searches
• Status of the EDELWEISS-2 Dark Matter Search

Cited by in corpus (2)

• Low Mass Gluino within the Sparticle Landscape, Implications for Dark Matter, and Early Discovery Prospects at LHC-7
• Determining Ratios of WIMP-Nucleon Cross Sections from Direct Dark Matter Detection Data